This learning resource introduces the concept of systems in astronomy, focusing on the solar system. It defines a system as a collection of parts that work together to form a whole, using examples like bicycles and clocks to illustrate how components interact. Key components of the solar system, such as the Sun, planets, and moons, are highlighted, along with the pivotal role of gravity as the invisible force that maintains order. The resource encourages students to explore the interactions among these celestial bodies and how they relate to each other, fostering a deep understanding of their celestial neighborhood and the nature of systems.